.left-top-area {
  position: absolute;
  left: 20px;
  top: 82px;
  width: 297px;
  height: 293px;
  background-color: #FFFFFF;
  opacity: 0.8;
}

.scheme-logo {
  position: absolute;
  top: 13px;
  left: 22px;
  width: 16px;
  height: 16px;
}

.scheme-choose {
  position: absolute;
  top: 11px;
  left: 46px;
  height: 21px;
  font-size: 16px;
  font-weight: Bold;
  color: #333333;
}

.H_formation_design {
  position: absolute;
  left: 46px;
  top: 56px;
  height: 19px;
  font-size: 14px;
  font-weight: normal;
}

.H_difficulty {
  position: absolute;
  left: 46px;
  top: 76px;
  height: 19px;
  font-size: 14px;
  color: #333333;
}

.H_difficulty_logo {
  position: absolute;
  left: 84px;
  top: 76px;
  height: 12px;
}

.ex1_video {
  position: absolute;
  left: 170px;
  top: 78px;
  height: 19px;
  font-size: 14px;
  color: #333333;
}

.H_change_design {
  position: absolute;
  left: 46px;
  top: 116px;
  height: 19px;
  font-size: 14px;
  font-weight: normal;
}

.H_change_difficulty {
  position: absolute;
  left: 46px;
  top: 136px;
  height: 19px;
  font-size: 14px;
  color: #333333;
}

.H_change_difficulty_logo {
  position: absolute;
  left: 84px;
  top: 136px;
  height: 12px;
}

.ex2_video {
  position: absolute;
  left: 170px;
  top: 138px;
  height: 19px;
  font-size: 14px;
  color: #333333;
}

.night_design {
  position: absolute;
  left: 46px;
  top: 171px;
  height: 19px;
  font-size: 14px;
  font-weight: normal;
}

.night_difficulty {
  position: absolute;
  left: 46px;
  top: 191px;
  height: 19px;
  font-size: 14px;
  color: #333333;
}

.night_difficulty_logo {
  position: absolute;
  left: 84px;
  top: 191px;
  height: 12px;
}

.ex3_video {
  position: absolute;
  left: 170px;
  top: 193px;
  height: 19px;
  font-size: 14px;
  color: #333333;
}

.expand_design {
  position: absolute;
  left: 46px;
  top: 226px;
  height: 19px;
  font-size: 14px;
  font-weight: normal;
}

.expand_difficulty {
  position: absolute;
  left: 46px;
  top: 246px;
  height: 19px;
  font-size: 14px;
  color: #333333;
}

.expand_difficulty_logo {
  position: absolute;
  left: 84px;
  top: 247px;
  height: 12px;
}

.ex4_video {
  position: absolute;
  left: 170px;
  top: 248px;
  height: 19px;
  font-size: 14px;
  color: #333333;
}

.ex_btn {
  margin: 0;
  padding: 0;
  outline: none;
  background-color: transparent;
  border-style: none;
}

.difficulty {
  font-size: 12px;
}


.left-mid-area {
  position: absolute;
  left: 20px;
  top: 386px;
  width: 297px;
  height: 150px;
  background-color: #FFFFFF;
  opacity: 0.8;
}

.system_setting_logo {
  position: absolute;
  top: 11px;
  left: 22px;
  width: 15px;
  height: 14px;
  font-size: 20px;
}

.system_setting {
  position: absolute;
  left: 46px;
  top: 11px;
  height: 21px;
  font-weight: bold;
  color: #333333;
  font-size: 16px;
}

.plane_number {
  position: absolute;
  left: 21px;
  top: 53px;
  height: 19px;
}

.plane_number_input {
  position: absolute;
  left: 194px;
  top: 53px;
  width: 65px;
  height: 22px;
}

.min_safe_distance {
  position: absolute;
  left: 21px;
  top: 81px;
  height: 19px;
}

.min_safe_distance_input {
  position: absolute;
  left: 194px;
  top: 80px;
  width: 65px;
  height: 22px;
}

.long_control_distance {
  position: absolute;
  left: 21px;
  top: 109px;
  height: 19px;
}

.long_control_distance_input {
  position: absolute;
  left: 194px;
  top: 107px;
  width: 65px;
  height: 22px;
}

.finish {
  color: green;
}
